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JDK8 示例和文档更新
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‎README.md

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- [Java 正则](docs/advanced/java-regex.md)
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- [Java 编码和加密](docs/advanced/java-crypto.md) - 关键词：`Base64`、`消息摘要`、`数字签名`、`对称加密`、`非对称加密`、`MD5`、`SHA`、`HMAC`、`AES`、`DES`、`DESede`、`RSA`
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- [Java 本地化](docs/advanced/java-locale.md)
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- [Java JDK8](docs/advanced/jdk8.md)
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- [Java JDK8](docs/advanced/jdk8.md) - 关键词：`Stream`、`lambda`、`Optional`、`@FunctionalInterface`
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### [Java 容器](docs/container)
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‎codes/javacore-jdk8/README.md

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# JDK8 特性示例
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> 本项目代码来源于 [java8-tutorial](https://github.com/winterbe/java8-tutorial)

‎codes/javacore-jdk8/src/main/java/io/github/dunwu/javacore/jdk8/nashorn/Nashorn1.java

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package io.github.dunwu.javacore.jdk8.nashorn;
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import cn.hutool.core.io.resource.ResourceUtil;
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import io.github.dunwu.javacore.jdk8.lambda.Person;
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import java.io.BufferedReader;
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import java.io.FileReader;
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import java.io.InputStream;
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import java.nio.charset.Charset;
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import java.time.LocalDateTime;
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import java.util.Date;
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import javax.script.Invocable;
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public static void main(String[] args) throws Exception {
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ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");
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engine.eval(new FileReader("res/nashorn1.js"));
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BufferedReader reader = ResourceUtil.getReader("META-INF/scripts/nashorn1.js", Charset.defaultCharset());
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engine.eval(reader);
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Invocable invocable = (Invocable) engine;
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Object result = invocable.invokeFunction("fun1", "Peter Parker");

‎codes/javacore-jdk8/src/main/java/io/github/dunwu/javacore/jdk8/nashorn/Nashorn10.java

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package io.github.dunwu.javacore.jdk8.nashorn;
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import cn.hutool.core.io.resource.ResourceUtil;
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import jdk.nashorn.api.scripting.NashornScriptEngine;
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import java.util.concurrent.TimeUnit;
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public static void main(String[] args) throws ScriptException, NoSuchMethodException {
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NashornScriptEngine engine = (NashornScriptEngine) new ScriptEngineManager().getEngineByName("nashorn");
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engine.eval("load('res/nashorn10.js')");
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String filename = ResourceUtil.getResource("META-INF/scripts/nashorn10.js").getFile();
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engine.eval("load('" + filename + "')");
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long t0 = System.nanoTime();
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‎codes/javacore-jdk8/src/main/java/io/github/dunwu/javacore/jdk8/nashorn/Nashorn2.java

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package io.github.dunwu.javacore.jdk8.nashorn;
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import cn.hutool.core.io.resource.ResourceUtil;
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import jdk.nashorn.api.scripting.ScriptObjectMirror;
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import java.io.BufferedReader;
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import java.io.FileReader;
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import java.nio.charset.Charset;
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import java.util.Arrays;
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import javax.script.ScriptEngine;
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import javax.script.ScriptEngineManager;
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public static void main(String[] args) throws Exception {
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ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");
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engine.eval(new FileReader("res/nashorn2.js"));
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BufferedReader reader = ResourceUtil.getReader("META-INF/scripts/nashorn2.js", Charset.defaultCharset());
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engine.eval(reader);
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}
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}

‎codes/javacore-jdk8/src/main/java/io/github/dunwu/javacore/jdk8/nashorn/Nashorn3.java

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package io.github.dunwu.javacore.jdk8.nashorn;
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import cn.hutool.core.io.resource.ResourceUtil;
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import java.io.BufferedReader;
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import java.nio.charset.Charset;
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import javax.script.ScriptEngine;
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import javax.script.ScriptEngineManager;
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public static void main(String[] args) throws Exception {
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ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");
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engine.eval("load('res/nashorn3.js')");
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BufferedReader reader = ResourceUtil.getReader("META-INF/scripts/nashorn3.js", Charset.defaultCharset());
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engine.eval(reader);
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}
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}

‎codes/javacore-jdk8/src/main/java/io/github/dunwu/javacore/jdk8/nashorn/Nashorn4.java

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package io.github.dunwu.javacore.jdk8.nashorn;
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import cn.hutool.core.io.resource.ResourceUtil;
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import java.io.BufferedReader;
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import java.nio.charset.Charset;
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import java.util.Arrays;
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import javax.script.ScriptEngine;
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import javax.script.ScriptEngineManager;
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public static void main(String[] args) throws Exception {
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ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");
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engine.eval("loadWithNewGlobal('res/nashorn4.js')");
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String filename = ResourceUtil.getResource("META-INF/scripts/nashorn4.js").getFile();
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engine.eval("loadWithNewGlobal('" + filename + "')");
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}
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}

‎codes/javacore-jdk8/src/main/java/io/github/dunwu/javacore/jdk8/nashorn/Nashorn5.java

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package io.github.dunwu.javacore.jdk8.nashorn;
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import cn.hutool.core.io.resource.ResourceUtil;
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import javax.script.Invocable;
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import javax.script.ScriptEngine;
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import javax.script.ScriptEngineManager;
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public static void main(String[] args) throws Exception {
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ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");
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engine.eval("load('res/nashorn5.js')");
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String filename = ResourceUtil.getResource("META-INF/scripts/nashorn5.js").getFile();
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engine.eval("load('" + filename + "')");
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Invocable invocable = (Invocable) engine;
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‎codes/javacore-jdk8/src/main/java/io/github/dunwu/javacore/jdk8/nashorn/Nashorn6.java

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package io.github.dunwu.javacore.jdk8.nashorn;
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import cn.hutool.core.io.resource.ResourceUtil;
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import jdk.nashorn.api.scripting.ScriptObjectMirror;
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import javax.script.Invocable;
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public static void main(String[] args) throws Exception {
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ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");
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engine.eval("load('res/nashorn6.js')");
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String filename = ResourceUtil.getResource("META-INF/scripts/nashorn6.js").getFile();
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engine.eval("load('" + filename + "')");
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Invocable invocable = (Invocable) engine;
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‎codes/javacore-jdk8/src/main/java/io/github/dunwu/javacore/jdk8/nashorn/Nashorn8.java

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package io.github.dunwu.javacore.jdk8.nashorn;
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import cn.hutool.core.io.resource.ResourceUtil;
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import io.github.dunwu.javacore.jdk8.lambda.Person;
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import jdk.nashorn.api.scripting.NashornScriptEngine;
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public static void main(String[] args) throws ScriptException, NoSuchMethodException {
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NashornScriptEngine engine = (NashornScriptEngine) new ScriptEngineManager().getEngineByName("nashorn");
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engine.eval("load('res/nashorn8.js')");
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String filename = ResourceUtil.getResource("META-INF/scripts/nashorn8.js").getFile();
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engine.eval("load('" + filename + "')");
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engine.invokeFunction("evaluate1"); // [object global]
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engine.invokeFunction("evaluate2"); // [object Object]

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